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Finding the Fourth Proportional to 2,591.73, 3,888 and 948.06

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Solution

The fourth proportional to 2,591.73, 3,888 and 948.06 is: 1,422.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.73 : 3,888 = 948.06 : x
  2. Step 2: Convert to fraction form
    2,591.73/3,888 = 948.06/x
  3. Step 3: Cross multiply
    2,591.73x = 3,888 × 948.06
  4. Step 4: Simplify right side
    2,591.73x = 3,686,057.28
  5. Step 5: Solve for x
    x = 3,686,057.28/2,591.73
  6. Step 6: Final answer
    x = 1,422.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.